This site provides synchronous communication. There is some cost involved and it is limited to 15 participants. I don’t know if this would be an effective tool for an online course, however, it is another resource to consider for special use purposes.
One special use purpose may be to use it to conduct office hours. The benefits of this tools includes:
- It’s easy – no installations.
- It’s compatible – PC, Mac, Linux, powerpoints, documents, images, videos, mp3’s, flash files.
- Conferencing features – whiteboarding, video conferencing, screen sharing, Voice-over-IP.
- Collaboration features – continuous rooms are always saved and always-on. Contextual discussion forums, voice-notes, track and log activity.